What Causes Slight Idle Vibration in the Sagitar?
2 Answers
Sagitar idle vibration may be caused by a dirty throttle, excessive carbon buildup inside the engine, or spark plug failure. The details are as follows: 1. Dirty throttle: When the car is started and the engine is idling, air needs to continuously enter the cylinder through the throttle to mix with gasoline for combustion. If the throttle is too dirty, it reduces the air intake, and insufficient air intake disrupts the normal air-fuel ratio, leading to engine vibration. 2. Excessive carbon buildup inside the engine: Prolonged use of the engine can cause excessive internal carbon buildup, resulting in engine vibration. 3. Spark plug failure: If spark plugs are not replaced for a long time, the electrode gap may become too large, affecting the ignition timing. This not only causes engine vibration but also increases fuel consumption.
I'm an experienced auto mechanic. The Sagitar's idle vibration is most likely caused by a few common issues. The most frequent culprit is worn engine mounts - you can feel noticeable shaking through the steering wheel. Spark plugs with enlarged gaps from prolonged use cause rough ignition and severe vibration. If it shakes when cold but improves when warm, it's probably dirty throttle body with carbon buildup obstructing the intake valve. Clogged fuel lines could also be the reason, as poor fuel injector atomization leads to uneven combustion. Last week I fixed one with leaking ignition coils that shook like having chills. Don't underestimate minor vibrations - they can damage the engine over time. I recommend reading fault codes first, focusing on ignition system and engine mounts. These are particularly problematic areas for German cars.
